2006-2009 Impala LS4 V8 Modifications from Overkill Motorsport - Chevy Impala Forums
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 01-23-2016, 10:50 PM Thread Starter
 
Overkill's Avatar
 
Join Date: Feb 2012
Location: British Columbia
Posts: 412
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Thanks: 43
Thanked 253 Times in 123 Posts
2006-2009 Impala LS4 V8 Modifications from Overkill Motorsport

Here's a compilation of all of the products offered by Overkill Motorsport for your 5.3 LS4 Impala SS.

:: Overkill Motorsports :: www . ls4tune . com





Overkill tuning for the LS4 is offered through the Diablosport line of tuners. Not only do you get a great handheld, but you also get a premium LS4 tune from Overkill Motorsport rather than the generic preloaded tune. You'll get a 91/93 octane tune with 87 octane tuning also available, the ability to request to disable 4-cylinder Displacement On Demand/Active Fuel Management mode, significant revisions to the transmission to improve performance and life expectancy, and a horsepower gain of 15-20 on an otherwise stock car, with more significant gains with intake/exhaust upgrades. Custom tuning is available with datalogging and is no extra charge.



A module exchange service is still offered as well for 2007-2009 LS4s. Your Overkill tune gets flashed into a replacement module set, after being programmed with GM's latest factory calibration using GM's own programming system. These modules replace your current modules and voila you're tuned. The negative is this is a preset tune for your modifications, but the positive is pricepoint, a significant savings if you have only basic modifications to program for and are willing to send in your current computers for the deposit refund.

05-06 owners, we no longer offer the module exchange, but you can send in your modules for reprogramming, at the great pricepoint of $149! See our website for details.



One of the most significant LS4 modifications you can do is an intake manifold upgrade. The factory intake manifold is pinched at the inlet in a poor engineering effort by GM. Our solution is this Shutter intake manifold, which re-engineers a GM truck based intake manifold to fit the LS4, providing horsepower gains of 30 or more! This system comes complete with new fuel rails, fuel injectors, an adapter plate to bolt on your LS4 throttle body, new vacuum hoses, new gaskets and all stainless steel bolts. No modifications to the DoD system or valley plate are required, no fabrication except for a single hacksaw cut to the alternator bracket.

Overkill is the only company offering a bolt on LS4 intake manifold upgrade!






GM reuses the small V6 mass airflow sensor on the LS4 V8, and all other intakes on the market reuse this sensor with their kits. The Overkill intake uses a larger MAF sensor with a 4" inlet, that flows the airflow that a V8 needs. Dyno tested, it provided a 6 wheel horsepower gain on a typically modified LS4 with headers, tune and existing aftermarket intake system. Tuning is required but worthwhile! Retrofits are available to use this MAF with the K&N intake or CAI Inc intake.

See this youtube video for more info https://youtu.be/RFiCLx5aWqU



These are Brisk LGS spark plugs, designed in cooperation with Lamborghini (Brisk is their OE plug supplier). A patented surface fire spark plug, the spark happens deeper in the cylinder for a better burn, while its silver core is a better conductor than copper. You'll notice a smoother idle, better throttle response, and we've seen a consistent 3-4whp gain which is nothing to sneeze at at this pricepoint.

They are paired with the 8mm wires that GM upgraded to and used on the 6.2 Supercharged V8 platforms, which retrofit to the LS4.





This is a fully assembled, ready to install shift kit solution. A brand new housing using all brand new parts from GM encloses a TransGo shift kit, with a few custom Overkill revisions. By far the easiest way to install a shift kit, with no concerns about reusing worn parts, or assembly error.

Included is a Wix transmission filter kit, a new pan gasket, two new GM updated magnets for the pan and filter, and a Sonnax line retainer kit.




Computer Tunes for all 7th 8th and 9th Gen Impalas including 3.6 Direct Injection V6, 3800 Supercharged V6, 5.3 LS4 V8 and 3500/3900 V6
www.OverkillTune.com
https://www.facebook.com/GetOverkilled
Email willoverkill@gmail.com, message on Facebook or through the forums
Overkill is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Chevy Impala Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
2012-13 Impala Modifications from Overkill Motorsport Overkill Overkill Motorsport 1 02-15-2017 08:51 AM
2014+ Impala modifications from Overkill Motorsport Overkill Overkill Motorsport 0 01-23-2016 08:19 PM
**Overkill LS4 Intake Manifold Upgrade** Overkill 8th Gen Engine Performance 7 09-04-2015 10:17 AM
1:24 Scale Motorsport Authentics #88 2009 Impala SS Dale Earnhardt Jr. RSS Bot Impala Diecast Toys Cars on eBay 0 10-12-2013 09:40 PM
Questions about Overkill PCM for LS4 Motor 06ChevySS Chevy Impala 8th Gen Discussion 1 02-14-2013 11:10 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome